I've worked out a solution for that, it's not really a "good" solution but it helps - I have a paypal debit card, which allows me to withdraw funds at an ATM from my paypal account.  I'm usually not very far from an ATM, so as soon as the funds hit, I go and withdraw the cash, I then release the escrow.  I know that they could still do a chargeback, but at least I'm not out the cash while it gets resolved.  It's a lot easier to deal with a negative paypal balance than a $300-400 hit all at once.